Not sure how I got these photos, but I once send an e-mail to Dierenpark Emmen with some questions about the mammals kept in the nocturnal section of the Biochron around 1990 and I think I got these photos at that time.
@AWP There was a NOCTURNAL section of the Biochron? Good lord, that makes me more despondent over the closure of Dierenpark Emmen, I really wanted to visit this place in its prime!
@Wyman Nocturnal section is a bit of an overstatement, there were two nocturnal mammal enclosures in the mammal evolution section, which held Senegal Galago and Belanger's Tree Shrew...
@Wyman@lintworm In the late 1980's and early 1990's there was a actual nocturnal section. When you entered from the butterfly garden, it started with a diorama of a sleeping large lizard-like reptile surrounded by weasel-like mammals representing the early phase of mammal evolution as nocturnal animals in the shadows of the reptiles/dinosaurs. Along a darkened corridor were enclosures for bats, sloths, armadillos, echidnas, galagos, tree shrews and opossums. During the 1990's this section was remodelled to a exposition on mammal evolution with just two enclosures for three shrews and galagos.
I guess the sloths, armadillos and maybe bats (I do remember the bat enclosure, but not the species kept and the guide doesn't specify it either) moved to the nocturnal walkthrough enclosure of the AmeriCasa during the mid-1990's.